1. Evaluate. 7-3 (Points : 1)
-343
-1/16
-21
1/343
2. Evaluate (3 + 4) + 1 in the mod 5 system. (Points : 1)
4
2
8
3
3. Convert 1111two to base ten. (Points : 1) Answer: 1111two= 15ten
4. Which property is not true for all numbers on the 12-hour clock? (Points : 1)
Inverse property for multiplication
Closure property for addition
Identity property for multiplication
Identity property for addition
5. Find the value of y in the mod 9 system.
5 x y = 4 (Points : 1)
4/5
8
2
6
6. Perform the multiplication on the 12-hour clock. 11 x 3 (Points : 1)
11
9
8
10
7. Simplify: 5(-3x + 3) (Points : 1)
0
-15x + 15
15x + 15
-15x + 3
8. Find the LCM of 29 and 116. (Points : 1)
116
3364
29
1
9. Which property of the real numbers is illustrated by the following statement?
-6 x (17 + 14) = -6(17) + (-6)(14) (Points : 1)
Commutative property of multiplication
Associative property of addition
Distributive property
Closure property of multiplication
10. Write 426 in expanded notation. (Points : 1)
4 ´ 102 + 2 ´ 101 + 6
400 + 20 + 6
4 ´ 102 + 26
11. Simplify. 88 · 8-8 (Points : 1)
8
undefined
1
0
12. Add. (-6) + (-14) (Points : 1)
-20
-8
20
8
13. 51 is a ____________ number. (Points : 1)
composite it can be written as 3x17
prime
14. Find the equivalent number on the 12-hour clock. 329 (Points : 1)
3
4
6
5
15. Find the additive inverse of 5 on the 12-hour clock. (Points : 1) Answer: 7
16. Solve the inequality: x + 14 < -11 (Points : 1)
x>3
x > -25
x < -25
x<3
17. Write 12,767 in base sixteen. (Points : 1)
311214sixteen
311315sixteen
31DFsixteen
31CEsixteen
18. A community college has 3,000 students and 90 instructors. The college plans that
enrollment will be 3,500 next year. How many new instructors should be hired if the college
wants to keep the same student to instructor ratio? (Points : 1)
13 instructors
15 instructors
105 instructors
77 instructors
19. Which property of the real numbers is illustrated by the following statement?
(18 + 3) + 14 = 18 + (3 + 14) (Points : 1)
Associative property of addition
Identity property for addition
Distributive property
Commutative property of addition
20. Determine the place value of the digit 2 in the number 8,210,635. (Points : 1)
thousands
ten thousands
hundred thousands
millions